{"id":6057,"date":"2021-11-23T10:15:55","date_gmt":"2021-11-23T10:15:55","guid":{"rendered":"https:\/\/bluetunisia.com\/?p=6057"},"modified":"2025-07-22T13:13:40","modified_gmt":"2025-07-22T13:13:40","slug":"500-millions-de-personnes-ont-subi-la-desertification","status":"publish","type":"post","link":"https:\/\/bluetunisia.com\/fr\/500-millions-de-personnes-ont-subi-la-desertification\/","title":{"rendered":"500 millions de personnes ont subi la d\u00e9sertification!"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<p><strong><em>\u201cEn 2015, environ 500 (380-620) millions de personnes vivaient dans des zones qui ont subi une d\u00e9sertification entre les ann\u00e9es 1980 et les ann\u00e9es 2000. Les populations les plus touch\u00e9es sont en Asie du Sud et de l\u2019Est, autour du Sahara dans une r\u00e9gion incluant l\u2019Afrique du Nord \u201c Source GIEC .<\/em><\/strong><\/p>\n\n\n\n<p>Actuellement , nous vivons une d\u00e9gradation du climat en Tunisie et ceci est du \u00e0 la hausse de la temp\u00e9rature caus\u00e9e par le r\u00e9chauffement climatique et l\u2019augmentation de l\u2019\u00e9mission des GES ( gaz \u00e0 effet de serre) qui y ont d\u00e9duit . Une grande partie de la population serait menac\u00e9e par la la migration climatique \u00e0 cause de la d\u00e9sertification de certaines zones du pays .La d\u00e9sertification est un danger imminent que la Tunisie et les pays de l\u2019Afrique du nord n\u2019y sont&nbsp; pas \u00e9pargn\u00e9es.<\/p>\n\n\n\n<p><strong>C\u2019est quoi la d\u00e9sertification ?&nbsp;<\/strong><\/p>\n\n\n\n<p>La premi\u00e8re image qui nous&nbsp; vient \u00e0 la t\u00eate quand nous disons la d\u00e9sertification&nbsp; est les dunes de sables \u00e0 perte de vue .&nbsp;<\/p>\n\n\n\n<p>Cependant , il y\u2019a plusieurs formes de la d\u00e9sertification : l\u2019\u00e9rosion hydrique et \u00e9olienne des sols , la d\u00e9gradation du couvert v\u00e9g\u00e9tal et la salinisation suivie par la s\u00e9cheresse des sols et d\u00e9gradation irr\u00e9versible des sols .<\/p>\n\n\n\n<p><strong>La situation de la Tunisie aujourd\u2019hui?&nbsp;<\/strong><\/p>\n\n\n\n<p>Plus des trois quarts de la Tunisie sont menac\u00e9s par la d\u00e9sertification. Cette menace est importante surtout dans les milieux arides (Tunisie m\u00e9ridionale et centrale) et semi-arides (la Dorsale et une partie du Tell septentrional). Elle concerne respectivement 77,6% et 16,4% de l&rsquo;espace de ces territoires (SNDD, 2014) . Nous vivons une d\u00e9gradation du climat en Tunisie et ceci est du \u00e0 la hausse de la temp\u00e9rature caus\u00e9e par le r\u00e9chauffement climatique et l\u2019augmentation de l\u2019\u00e9mission des GES ( gaz \u00e0 effet de serre) qui y ont d\u00e9duit . Une grande partie de la population serait menac\u00e9e par la la migration climatique \u00e0 cause de la d\u00e9sertification de certaines zones du pays.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/bluetunisia.com\/wp-content\/uploads\/2021\/11\/image-2-1024x568.png\" alt=\"\" class=\"wp-image-6058\" width=\"455\" height=\"251\" srcset=\"https:\/\/bluetunisia.com\/wp-content\/uploads\/2021\/11\/image-2-1024x568.png 1024w, https:\/\/bluetunisia.com\/wp-content\/uploads\/2021\/11\/image-2-300x166.png 300w, https:\/\/bluetunisia.com\/wp-content\/uploads\/2021\/11\/image-2-768x426.png 768w, https:\/\/bluetunisia.com\/wp-content\/uploads\/2021\/11\/image-2-1536x851.png 1536w, https:\/\/bluetunisia.com\/wp-content\/uploads\/2021\/11\/image-2.png 1757w\" sizes=\"(max-width: 455px) 100vw, 455px\" \/><\/figure>\n\n\n\n<p><strong>Les causes de cette situation?&nbsp;<\/strong><\/p>\n\n\n\n<p>75% des terres cultivables du pays sont menac\u00e9es par le processus de d\u00e9sertification. Un ph\u00e9nom\u00e8ne ancien li\u00e9 notamment \u00e0 la d\u00e9forestation et \u00e0 l\u2019agriculture industrielle.<\/p>\n\n\n\n<p>En outre , depuis la p\u00e9riode pr\u00e9industrielle, la temp\u00e9rature de l\u2019air \u00e0 la surface des terres \u00e9merg\u00e9es a augment\u00e9 pr\u00e8s de deux fois plus que la temp\u00e9rature moyenne mondiale .<\/p>\n\n\n\n<p>Ceci a eu un impact n\u00e9gatif sur la s\u00e9curit\u00e9 alimentaire et sur les \u00e9cosyst\u00e8mes terrestres et a contribu\u00e9 \u00e0 la d\u00e9sertification et \u00e0 la d\u00e9gradation des terres dans de nombreuses r\u00e9gions&nbsp; Dans certaines zones arides, l\u2019augmentation de la temp\u00e9rature \u00e0 la surface des terres et de l\u2019\u00e9vapotranspiration et la diminution du volume des pr\u00e9cipitations, en interaction avec la variabilit\u00e9 du climat et les activit\u00e9s humaines, ont contribu\u00e9 aussi \u00e0 la d\u00e9sertification .<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/bluetunisia.com\/wp-content\/uploads\/2021\/11\/image-3-1024x510.png\" alt=\"\" class=\"wp-image-6059\" width=\"429\" height=\"213\" srcset=\"https:\/\/bluetunisia.com\/wp-content\/uploads\/2021\/11\/image-3-1024x510.png 1024w, https:\/\/bluetunisia.com\/wp-content\/uploads\/2021\/11\/image-3-300x149.png 300w, https:\/\/bluetunisia.com\/wp-content\/uploads\/2021\/11\/image-3-768x383.png 768w, https:\/\/bluetunisia.com\/wp-content\/uploads\/2021\/11\/image-3-600x299.png 600w, https:\/\/bluetunisia.com\/wp-content\/uploads\/2021\/11\/image-3.png 1497w\" sizes=\"(max-width: 429px) 100vw, 429px\" \/><figcaption><em>Source OSS<\/em><\/figcaption><\/figure>\n\n\n\n<p>Photo by <a href=\"https:\/\/unsplash.com\/@mikejerskine?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText\">Mike Erskine<\/a> on <a href=\"https:\/\/unsplash.com\/s\/photos\/climate-change-hot?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText\">Unsplash<\/a><br>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u201cEn 2015, environ 500 (380-620) millions de personnes vivaient dans des zones qui ont subi une d\u00e9sertification entre les ann\u00e9es 1980 et les ann\u00e9es 2000. Les populations les plus touch\u00e9es sont en Asie du Sud et de l\u2019Est, autour du Sahara dans une r\u00e9gion incluant l\u2019Afrique du Nord \u201c Source GIEC . Actuellement , nous [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":6060,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"pmpro_default_level":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[167],"tags":[],"coauthors":[],"class_list":["post-6057","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","pmpro-has-access"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>500 millions de personnes ont subi la d\u00e9sertification! - Blue Tunisia<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bluetunisia.com\/fr\/500-millions-de-personnes-ont-subi-la-desertification\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"500 millions de personnes ont subi la d\u00e9sertification! - Blue Tunisia\" \/>\n<meta property=\"og:description\" content=\"\u201cEn 2015, environ 500 (380-620) millions de personnes vivaient dans des zones qui ont subi une d\u00e9sertification entre les ann\u00e9es 1980 et les ann\u00e9es 2000. Les populations les plus touch\u00e9es sont en Asie du Sud et de l\u2019Est, autour du Sahara dans une r\u00e9gion incluant l\u2019Afrique du Nord \u201c Source GIEC . Actuellement , nous [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/bluetunisia.com\/fr\/500-millions-de-personnes-ont-subi-la-desertification\/\" \/>\n<meta property=\"og:site_name\" content=\"Blue Tunisia\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Blue.Tunisia\/\" \/>\n<meta property=\"article:published_time\" content=\"2021-11-23T10:15:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-22T13:13:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/bluetunisia.com\/wp-content\/uploads\/2021\/11\/mike-erskine-GKFsewk-hz0-unsplash-scaled-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1706\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Mayssa Sandli\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Blue___tn\" \/>\n<meta name=\"twitter:site\" content=\"@Blue___tn\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mayssa Sandli\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n\t<meta name=\"twitter:label3\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data3\" content=\"Mayssa Sandli\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/bluetunisia.com\/fr\/500-millions-de-personnes-ont-subi-la-desertification\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/bluetunisia.com\/fr\/500-millions-de-personnes-ont-subi-la-desertification\/\"},\"author\":{\"name\":\"Mayssa Sandli\",\"@id\":\"https:\/\/bluetunisia.com\/fr\/#\/schema\/person\/04c0ab81b684ee0c966d895d1571d1a0\"},\"headline\":\"500 millions de personnes ont subi la d\u00e9sertification!\",\"datePublished\":\"2021-11-23T10:15:55+00:00\",\"dateModified\":\"2025-07-22T13:13:40+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/bluetunisia.com\/fr\/500-millions-de-personnes-ont-subi-la-desertification\/\"},\"wordCount\":511,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/bluetunisia.com\/fr\/#organization\"},\"image\":{\"@id\":\"https:\/\/bluetunisia.com\/fr\/500-millions-de-personnes-ont-subi-la-desertification\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/bluetunisia.com\/wp-content\/uploads\/2021\/11\/mike-erskine-GKFsewk-hz0-unsplash-scaled-1.jpg\",\"articleSection\":[\"News\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/bluetunisia.com\/fr\/500-millions-de-personnes-ont-subi-la-desertification\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/bluetunisia.com\/fr\/500-millions-de-personnes-ont-subi-la-desertification\/\",\"url\":\"https:\/\/bluetunisia.com\/fr\/500-millions-de-personnes-ont-subi-la-desertification\/\",\"name\":\"500 millions de personnes ont subi la d\u00e9sertification! 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